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问题 计算题

（1）化简：8(a-b)2+4(a-b)+5(b-a)-6(b-a)2

（2）化简：3x3-[x3+(6x2-7x)]-2(x3-3x2-4x)

 

答案

（1）

（2）15x

听力题

1.    What’s for dinner? I’m 　　         　(饿死).

2.    Nothing 　　　          （满意）him. He is always complaining.

3.     His 　　         　 (祖先）had come to England as refugees(难民）.

4.     The　　         　 (起源）of the custom are unknown.

5.     Mr. Smith bought his wife a g　　         　（真正的）diamond necklace in memory of their tenth wedding anniversary.

6.    It’s bad　　         　 (礼貌）to talk in a loud voice on the mobile phone in public.

7.    Vancouver is　　         （包围）by mountains on the north and east.

8.    With the Internet news from every part of the world 　　         　（传播）rapidly.

9.     Give Mary a call, she needs ____________________（振作）.

10.  A plastic bag was seen　　         　（漂浮）in the water.
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单项选择题

电杆连接时，当采用钢圈连接的钢筋混凝土杆时宜采用（）连接。

A.法兰盘螺栓

B.插入式

C.电弧焊接

D.气焊焊接
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